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2014-06-09T11:35:07+03:00
|√2x-1|=11
=> √2x+1=11
√2x=11-1
√2x=10
x= 10/√2
x=...

1 5 1
2014-06-09T11:43:36+03:00
Ce este in modul poate lua valorile 11 sau -11
I. V2x - 1=11 ⇒ V2x=12⇒ 2x=12^2=144⇒ x-144:2=72
II V2x - 1= - 11⇒ V2x= -10⇒ 2x=10^2=100⇒ x=100:2=50
⇒ x apartine{50,72}